This standard is issued under the fixed designation F; the number immediately 1 This test method is under the jurisdiction of ASTM Committee F06 on. 8 Oct ASTM F is an excellent test for determining the actual moisture condition of a slab. As a result, this type of test is recommended by many. ASTM F Standard Test Method for Determining Relative Humidity in Concrete Floor Slabs Using in situ Probes. Specifications, Standards & Certificates.
|Published (Last):||27 August 2015|
|PDF File Size:||9.77 Mb|
|ePub File Size:||7.31 Mb|
|Price:||Free* [*Free Regsitration Required]|
Reusable sensors should be calibrated by the manufacturer at least once per year, or more often if exposed to conditions that may impact their accuracy. Astm f2170 to content Concrete slab moisture is a major cause of concrete flooring failure. Is this acceptable or compromise the test?
By following the ASTM-F astm f2170 method, flooring contractors can avoid these problems from poorly prepared concrete.
Public Knowledge Base
This will NOT be valid for ASTM compliance, but can certainly xstm a target timeline for schedule astm f2170 or for choosing alternate adhesive or flooring options that might have higher f1270 tolerances. The only thing we recommend is that you ensure that there is a good seal between the sensor body and the concrete wall.
Your email address will not be published. All sensors must be calibrated no less than 30 days prior to use. ASTM F formally recognizes the use of in situ probes as a means of conducting t2170 humidity testing. Astm f2170 my name, email, and website astm f2170 this browser for the next time I comment.
When concrete is mixed and poured, water astm f2170 migrates from the bottom of the slab to the surface to evaporate. And moisture can still be an issue at grade so concrete foundations must be designed to include proper moisture drainage. While a pin or even astm f2170 moisture meter can give a general idea of the presence of moisture, their results do not provide information upon which to make sound decisions.
The standard provides ast guidelines for RH testing methods. astm f2170
Some calibration restrictions may astm f2170, so read the standard carefully to be sure your test equipment qualifies for the most recent standard. These first five steps are all preparatory and should be done before any sensors or RH probes are installed. I would verify that the hole depths are consistent and that environmental conditions are at service conditions. The new probes are designed to give a good indication of high relative astm f2170 after an hour of testing. However, most laymen have never even heard of the standard, let alone become familiar with the details and reasons why atm tests are astm f2170 for flooring work.
You consent to our cookies if you continue to use our astm f2170. January 9, at Be sure to familiarize yourself with ASTM F and choose the best concrete moisture test method astm f2170 the job. Without it, even a well-dried and functioning foundation can end up with concrete slab asfm problems. Logically then, moisture levels at the bottom of a slab will read higher from those at the surface. If i have an area of approx sq ft and have done the required testing for the astm f2170, and 5 fail and 3 pass does the whole area fail?
Note that the liner requirements astm f2170 been updated and the hole is to be fully lined to meet the ASTM standard. Beyond that, contractors follow this ASTM testing standard because it is often considered the gold astm f2170 for moisture testing in concrete, and many manufacturers cite it as an accepted testing method. Meeting this standard provides the groundwork for limiting moisture-related flooring problems and the many liabilities and mitigation astm f2170 that can result from excess moisture.
F requires three test holes for the first ft 2 and, at least, one additional hole for each additional ft 2. If you forward to 1: April 7, at 3: It has been believed that the change in astm f2170 desiccant weight could be translated into a moisture ratio for the concrete beneath. Preparation Confirm your test method equipment meets specifications.
June 9, at 1: The test hole depth is not a fixed depth, but it must be calculated based on slab thickness and number astm f2170 drying sides: These in-situ probes that are left in the concrete are then attached to an RH meter also known as a thermo-hygrometer to take astm f2170 of the moisture conditions deep in the slab. Many contractors use vapor barriers directly under the slab to slow moisture permeation.
While any professional must astm f2170 the exact requirements of standard F the most recent versionthe following are 10 guidelines to help ensure that you have met the criteria laid out in ASTM F Make sure your calibration is up to date.
Section 11 astm f2170 ASTM F details the requirements of each report, including test hole location, dates and times of measurements, RH reading, temperature astm f2170, and any other conditions that might impact the RH reading see section 11 for complete reporting requirements. How do you handle this problem?
When To Test Concrete To ASTM F2170?
First, as you probably know, the ASTM standard is silent on this specific topic. Astm f2170 08 Oct Author: Concrete slab moisture problems can cause floor covering delamination, peeling, blistering, staining and sweating.
The depth is calculated to the astm f2170 of the test hole the location of the installed RH sensor or probe.
Using this testing method, astm f2170 are better able to predict how a concrete slab will behave in its astm f2170 use. As a result, this type of test is recommended by many international standards including ASTM, British Standards, and most Scandinavian standards, as well as being specified by floor covering, coating astm f2170 adhesive manufacturers worldwide. Each hole d2170 have a liner that aatm the sensor from ambient conditions, and sensors must have NIST-traceable calibration.
Change in ASTM F (RH Testing) Standard
September 6, at Map your sensor count and astm f2170. Relative humidity RH in a concrete slab can fluctuate with environmental changes. Posted by Tom Laurenzi on Nov 23, Concrete absorbs water vapor from the air under high ambient humidity; concrete releases more water vapor when the humidity of the astm f2170 air is low.